Viscosity: Diopside-Albite and Diopside-Anorthite Systems
Diopside-anorthite-albite is a key system of petrological interest and the system has several literature references available describing the phase relationships. However, there is an increased demand to study viscosity and density of oxide melts. When you have details about the viscosity of silicate melts and magmas, it allows for the investigation of the generation, transport, and emplacement of igneous rocks, which then enables you to get information about the melt structure [1983/1986Sca] .
Measurements of viscosity-temperature relationships along the two pseudo-binary joins were made by Scarfe et al. [1983Sca] and Scarfe and Cronin [1986Sca] over the temperature range 1423 K to 1873 K in air.
Examples using the TCS Metal Oxide Solutions Database (TCOX) show the diopside-albite (MgCaSi2O6-NaAlSi3O8) and diopside-anorthite (MgCaSi2O6-CaAl2Si2O8) systems.
Diopside-Albite (MgCaSi2O6-NaAlSi3O8) System
![The solid lines represent the calculated viscosities of MgCaSi2O6-NaAlSi3O8 system, which are compared with the experimental data by Scarfe et al. [1986].](../../../resources/images/thermophysicalprop/tcox_viscdiopside1.jpg "The solid lines represent the calculated viscosities of MgCaSi2O6-NaAlSi3O8 system, which are compared with the experimental data by Scarfe et al. [1986].")
Figure 1: The solid lines represent the calculated viscosities of MgCaSi2O6-NaAlSi3O8 system, which are compared with the experimental data by [198Sca].
Diopside-Anorthite (MgCaSi2O6-CaAl2Si2O8) System
![The solid lines represent the calculated viscosities of MgCaSi2O6-CaAl2Si2O8 system, which are compared with the experimental data by Scarfe and Cronin [1986].](../../../resources/images/thermophysicalprop/tcox_viscdiopside2.jpg "The solid lines represent the calculated viscosities of MgCaSi2O6-CaAl2Si2O8 system, which are compared with the experimental data by Scarfe and Cronin [1986].")
Figure 2: The solid lines represent the calculated viscosities of MgCaSi2O6-CaAl2Si2O8 system, which are compared with the experimental data by [198Sca].
References
[1983Sca] C. M. Scarfe, D. J. Cronin, J. T. Wenzel, D. A. Kauffman, Viscosity-temperature relationships at 1 atm in the system diopside-anorthite. Am. Mineral. 68, 1083–1088 (1983).
[1986Sca] C. M. Scarfe, D. J. Cronin, Viscosity-temperature relationships of melts at I atm in the system diopside-albite, Am. Mineral. 71, 767–771 (1986).